The calculated distance (air line) between Neuhofen an der Krems and Donaustadt is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Donaustadt is certainly longer, as only the direct route (as the crow flies) between Neuhofen an der Krems and Donaustadt has been calculated here.
Air line (approximately)
166 kilometers
89 nautical miles